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White emission from nano-structured top-emitting organic light-emitting diodes based on a blue emitting layer

Title
White emission from nano-structured top-emitting organic light-emitting diodes based on a blue emitting layer
Author(s)
Hyun, Woo JinPark, Jung JinIm, Sang HyukPark, O. OkChin, Byung Doo
Issued Date
2013-03-06
Citation
Journal of Physics D: Applied Physics, v.46, no.9
Type
Article
ISSN
0022-3727
Abstract
We demonstrated that white emission can be obtained from nano-structured top-emitting organic light-emitting diodes (TEOLEDs) based on a blue emitting layer (EML). The nano-structured TEOLEDs were fabricated on nano-patterned substrates, in which both optical micro-cavity and scattering effects occur simultaneously. Due to the combination of these two effects, the electroluminescence spectra of the nano-structured device with a blue EML exhibited not only blue but also yellow colours, which corresponded to the intrinsic emission of the EML and the resonant emission of the micro-cavity effect. Consequently, it was possible to produce white emission from nano-structured TEOLEDs without employing a multimode micro-cavity. The intrinsic emission wavelength can be varied by altering the dopant used for the EML. Furthermore, the emissive characteristics turned out to be strongly dependent on the nano-pattern sizes of the nano-structured devices. © 2013 IOP Publishing Ltd.
URI
http://hdl.handle.net/20.500.11750/2438
DOI
10.1088/0022-3727/46/9/095107
Publisher
Institute of Physics Publishing
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Appears in Collections:
ETC 1. Journal Articles
Department of Energy Science and Engineering ETC 1. Journal Articles

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